Why do boys always smile shyly every time someone makes a joke about boys and girls?

One possibility is that this boy is relatively introverted and not good at words. He even had the experience of explaining to others before, but the result was "the more he described it, the darker it became." So when others started talking about him and a certain person, When a girl makes a joke, he simply stays silent and laughs it off~

Another possibility is that the boy may really like the girl, and when others make fun of them, it plays into his hands~ As the saying goes, "If you joke too much, it becomes true"! And this is exactly what the boy hopes to achieve~~